1685888966 has 8 divisors (see below), whose sum is σ = 2582638560. Its totient is φ = 825009448.

The previous prime is 1685888957. The next prime is 1685888977. The reversal of 1685888966 is 6698885861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8967401 + ... + 8967588.

It is an arithmetic number, because the mean of its divisors is an integer number (322829820).

Almost surely, 2^1685888966 is an apocalyptic number.

1685888966 is a deficient number, since it is larger than the sum of its proper divisors (896749594).

1685888966 is a wasteful number, since it uses less digits than its factorization.

1685888966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17935038.

The product of its digits is 39813120, while the sum is 65.

The square root of 1685888966 is about 41059.5782491735. The cubic root of 1685888966 is about 1190.1718006320.

The spelling of 1685888966 in words is "one billion, six hundred eighty-five million, eight hundred eighty-eight thousand, nine hundred sixty-six".